package org.ly.supermarketsystem.config;

import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
/**
 * @Author: Ben
 * @Date: 2021/12/27 17:18
 */
public class DbPoolConnection {


        /*
        加载,链接druid,初始化数据库连接池
         */
        private static DbPoolConnection databasePool = null;
        private static DataSource dataSource = null;

        static {
            Properties properties = new Properties();
            try {
                InputStream inputStream=DbPoolConnection.class.getClassLoader().getResourceAsStream("druid.properties");
                properties.load(inputStream);
//            new InputStreamReader(new FileInputStream("F:\\code\\IdeaProject\\travel\\src\\main\\resources\\druid.properties"))
            } catch (IOException e) {
                e.printStackTrace();
            }
//            loadPropertyFile("./druid.properties");
            try {
                dataSource = DruidDataSourceFactory.createDataSource(properties);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        private DbPoolConnection() {
        }

        public static synchronized DbPoolConnection getInstance() {
            if (null == databasePool) {
                databasePool = new DbPoolConnection();
            }
            return databasePool;
        }

        public Connection getConnection() throws SQLException {
            return dataSource.getConnection();
        }
    }
